Regulator



FIG. 1 is a front, top and left side perspective view of a regulatorshowing our new design;

FIG. 2 is a rear, bottom and right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The dash-dotted lines represent the bounds of the claimed design thatform no part of the claimed design.

CLAIM The ornamental design for a regulator, as shown and described.